Cute little fellow, and a cute set. I'm just wondering why your shadows seem so light and open, when there's such a large and clear shadow showing from your main light. Are you lightening the images up substantially in post processing to lift the shadow values up? This is most clearly visible in shots 3,4,and 5. I really liked the look of the skin tones in the second shot--they seem more natural, whereas the others make the boy's skin look a bit oversaturated and less "real".

Very nice set. Nice color -that's a tricky color to work on. I can't cc lighting since I know nothing about studio work, but composition in the last one looks off. Either put more space on the left since he's facing that way, or if you miss it in camera, crop in more for the final image.